/* ============================================
   五恒森林家 — Brand Homepage Styles
   ============================================ */

/* --- Reset & Custom Properties --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --c-dark: #111e11;
  --c-dark-mid: #1a2e1a;
  --c-dark-soft: #2c4a2c;
  --c-light: #f5f2ed;
  --c-light-alt: #e8e4de;
  --c-sage: #a0d2aa;
  --c-text: #2c3e2c;
  --c-text-sub: #6b7c6b;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --section-px: clamp(2rem, 5vw, 5rem);
  --max-w: 1400px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-light);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- Scroll Animation Base --- */
.anim {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.anim.blur {
  transition: opacity 1.2s var(--ease), transform 1.2s var(--ease), filter 1.2s var(--ease);
  filter: blur(4px);
}
.anim.show {
  opacity: 1;
  transform: translateY(0);
}
.anim.blur.show {
  filter: blur(0);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem var(--section-px);
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
  color: var(--c-light);
  background: rgba(17, 30, 17, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.nav.scrolled {
  background: rgba(17, 30, 17, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.25em;
  font-weight: 600;
}
.nav-logo-text {
  color: var(--c-sage);
  transition: color 0.3s var(--ease);
}
.nav.scrolled .nav-logo-text {
  color: var(--c-sage);
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: inherit;
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  opacity: 0.65;
  transition: opacity 0.3s;
}
.nav-links a:hover { opacity: 1; }

/* 汉堡菜单按钮 - 始终显示 */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-light);
  transition: all 0.3s var(--ease);
  transform-origin: center;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* 桌面端导航水平排列，汉堡按钮隐藏 */
@media (min-width: 769px) {
  .nav-toggle {
    display: none;
  }
  .nav-links {
    position: static;
    flex-direction: row;
    gap: 1.5rem;
    background: none;
    backdrop-filter: none;
    opacity: 1;
    visibility: visible;
  }
  .nav-links li {
    opacity: 1;
    transform: none;
  }
  .nav-links a {
    font-size: 0.85rem;
    letter-spacing: 0.08em;
  }
}

/* ============================================
   Section 1: Hero
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}
.hero-city {
  position: absolute;
  inset: 0;
  background: linear-gradient(175deg, #2a2a2f 0%, #3a3a3f 25%, #4a4540 55%, #5a5550 80%, #6a6560 100%);
  background-image: url('/public/hero-city.jpg');
  background-size: cover;
  background-position: center;
}
.hero-city::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent, transparent 79px, rgba(255,255,255,0.02) 79px, rgba(255,255,255,0.02) 80px),
    repeating-linear-gradient(0deg, transparent, transparent 79px, rgba(255,255,255,0.02) 79px, rgba(255,255,255,0.02) 80px);
}
.hero-forest {
  position: absolute;
  inset: 0;
  background: linear-gradient(175deg, #081208 0%, #111e11 25%, #1a2e1a 50%, #2c4a2c 75%, #1a2e1a 100%);
  opacity: 0;
  will-change: opacity;
}
.hero-forest::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 25% 35%, rgba(160,210,170,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 500px 500px at 75% 65%, rgba(160,210,170,0.05) 0%, transparent 70%),
    radial-gradient(ellipse 300px 600px at 50% 80%, rgba(160,210,170,0.04) 0%, transparent 60%);
}
.hero-forest::after {
  content: '';
  position: absolute;
  top: 10%;
  left: 18%;
  width: 2px;
  height: 35%;
  background: linear-gradient(to bottom, rgba(160,210,170,0.1), transparent);
  opacity: 0.6;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.25);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  text-align: center;
  color: var(--c-light);
  padding: 0 var(--section-px);
  padding-bottom: 10rem;
}
.hero-tagline {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 3vw, 2.4rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  line-height: 2;
  opacity: 0;
  transform: translateY(20px);
  filter: blur(4px);
  transition: all 1.4s var(--ease);
}
.hero-tagline.visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  color: var(--c-light);
}
.scroll-hint span {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.45;
}
.scroll-hint-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(245,242,237,0.5), transparent);
  animation: scrollPulse 2.2s var(--ease) infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.2; transform: scaleY(0.5); transform-origin: top; }
  50% { opacity: 0.7; transform: scaleY(1); }
}

/* ============================================
   Section 2: Brand Reveal
   ============================================ */
.brand {
  min-height: 100vh;
  background: 
    linear-gradient(rgba(17, 30, 17, 0.65), rgba(17, 30, 17, 0.75)),
    url('/public/brand-bg.jpg') center/cover no-repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem var(--section-px);
  color: var(--c-light);
  position: relative;
}
.brand-slogan {
  font-family: var(--font-serif);
  font-size: clamp(0.85rem, 1.5vw, 1.1rem);
  letter-spacing: 0.3em;
  color: var(--c-sage);
  margin-bottom: 4rem;
  opacity: 0.85;
}
.brand-poem {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  margin-bottom: 4rem;
}
.brand-line {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2vw, 1.5rem);
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 2;
}
.brand-divider {
  width: 1px;
  height: 0;
  background: var(--c-sage);
  margin: 0 auto 3rem;
  transition: height 1s var(--ease);
  opacity: 0.5;
}
.brand-divider.show { height: 80px; }
.brand-name {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 600;
  color: var(--c-light);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.6rem, 1.5vw, 1.2rem);
}
.brand-part {
  letter-spacing: 0.15em;
}
.brand-forest {
  color: var(--c-sage);
  letter-spacing: 0.1em;
}

/* ============================================
   Section 3: Five Senses
   ============================================ */
.senses-intro {
  background: var(--c-light);
  padding: clamp(5rem, 12vw, 10rem) var(--section-px);
  text-align: center;
}
.senses-intro-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-text-sub);
  margin-bottom: 2rem;
}
.senses-intro-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 400;
  color: var(--c-text);
  letter-spacing: 0.1em;
}
.sense-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}
.sense-panel.dark {
  background: var(--c-dark);
  color: var(--c-light);
}
.sense-panel.light {
  background: var(--c-light);
  color: var(--c-text);
}
.sense-image {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
}
.sense-image-inner {
  position: absolute;
  inset: 0;
}
.sense-image-inner.img-1 {
  background: url('/public/sense-touch.jpg') center/cover no-repeat;
}
.sense-image-inner.img-2 {
  background: url('/public/sense-smell.jpg') center/cover no-repeat;
}
.sense-image-inner.img-3 {
  background: url('/public/sense-hear.jpg?v=2') center/cover no-repeat;
  background-position: center 5%;
}
.sense-image-inner.img-4 {
  background: url('/public/sense-sight.jpg') center/cover no-repeat;
  background-position: center 5%;
}
.sense-watermark {
  position: absolute;
  font-family: var(--font-serif);
  font-size: clamp(14rem, 22vw, 26rem);
  line-height: 1;
  opacity: 0.035;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  user-select: none;
}
.sense-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(3rem, 6vw, 6rem);
  position: relative;
}
.sense-number {
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.3;
  margin-bottom: 3rem;
}
.sense-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 400;
  letter-spacing: 0.2em;
  margin-bottom: 2.5rem;
  line-height: 1.2;
}
.sense-desc {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  line-height: 2.4;
  letter-spacing: 0.05em;
  margin-bottom: 3rem;
  max-width: 380px;
}
.sense-footnote {
  font-family: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Consolas', monospace;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  opacity: 0.85;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 4px;
  padding: 1rem 1.2rem;
  display: inline-block;
  line-height: 1.8;
  backdrop-filter: blur(10px);
  font-weight: 400;
}
.sense-panel.light .sense-footnote {
  background: rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.1);
}

/* ============================================
   Section 4: User Stories
   ============================================ */
/* Stories Section - 漂浮背景动效 */
.stories {
  position: relative;
  overflow: hidden;
}

.stories-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.stories-bg-item {
  position: absolute;
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  filter: blur(2px);
  border-radius: 4px;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(10px, -15px) rotate(2deg);
  }
  50% {
    transform: translate(-5px, -25px) rotate(-1deg);
  }
  75% {
    transform: translate(-15px, -10px) rotate(1deg);
  }
}

.stories-bg-img {
  position: absolute;
  width: 120px;
  height: 80px;
  object-fit: cover;
  opacity: 0.15;
  filter: blur(2px);
  animation: float 20s infinite ease-in-out;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-20px) rotate(2deg); }
  50% { transform: translateY(-10px) rotate(-1deg); }
  75% { transform: translateY(-30px) rotate(1deg); }
}

/* ============================================
   Section 4: User Stories (Simple 4-Card Grid)
   ============================================ */
.stories-section {
  padding: clamp(5rem, 10vw, 8rem) var(--section-px);
  background: var(--c-light);
  color: var(--c-text);
}
.stories-header {
  text-align: center;
  margin-bottom: clamp(3rem, 5vw, 5rem);
}
.stories-header .stories-btn {
  display: inline-block;
  margin-top: 2rem;
}
.stories-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-text-sub);
  margin-bottom: 1.5rem;
}
.stories-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0.1em;
}
.stories-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.story-item {
  border: 1px solid rgba(160,210,170,0.2);
  padding: clamp(1.5rem, 2.5vw, 2.5rem);
  transition: all 0.4s var(--ease);
  position: relative;
}
.story-item:hover {
  background: rgba(160,210,170,0.05);
  border-color: rgba(160,210,170,0.4);
}
.story-item-img {
  width: 100%;
  height: 180px;
  margin-bottom: 1.5rem;
  border-radius: 2px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1a2e1a;
}
.story-item-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}
.story-item-img.img-s1 {
  background: #1a2e1a;
}
.story-item-img.img-s2 {
  background: #1a2e1a;
}
.story-item-img.img-s3 {
  background: #1a2e1a;
}
.story-item-img.img-s4 {
  background: #1a2e1a;
}
.story-item-number {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-sage);
  margin-bottom: 0.8rem;
}
.story-item-name {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.5vw, 1.4rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
.story-item-role {
  font-size: 0.75rem;
  opacity: 0.6;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}
.story-item-location {
  font-size: 1rem;
  font-weight: 600;
  opacity: 0.9;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}
.story-item-area {
  font-size: 0.75rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}
.story-item-date {
  font-size: 0.75rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(160,210,170,0.2);
}
.story-item-area {
  font-size: 0.75rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(160,210,170,0.2);
}
.story-item-desc {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  line-height: 1.7;
  opacity: 0.8;
  letter-spacing: 0.02em;
}
.stories-cta {
  text-align: center;
  margin-top: clamp(3rem, 5vw, 4rem);
}
.stories-btn {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--c-text);
  text-decoration: none;
  padding: 0.9rem 2rem;
  border: 1px solid var(--c-text);
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}
.stories-btn:hover {
  background: var(--c-text);
  color: var(--c-light);
}
.stories-btn-secondary {
  background: transparent;
  border-color: var(--c-sage);
  color: var(--c-sage);
}
.stories-btn-secondary:hover {
  background: var(--c-sage);
  color: var(--c-light);
}
.stories-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: clamp(3rem, 5vw, 4rem);
}

@media (max-width: 768px) {
  .stories-cards {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 480px) {
  .stories-cards {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Section 5: Technology
   ============================================ */
.tech {
  min-height: 100vh;
  background: var(--c-dark);
  color: var(--c-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(5rem, 10vw, 8rem) var(--section-px);
  position: relative;
  overflow: hidden;
}
.tech::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 59px, rgba(160,210,170,0.025) 59px, rgba(160,210,170,0.025) 60px),
    repeating-linear-gradient(90deg, transparent, transparent 59px, rgba(160,210,170,0.025) 59px, rgba(160,210,170,0.025) 60px);
  pointer-events: none;
}
.tech-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-text-sub);
  margin-bottom: 2.5rem;
  position: relative;
}
.tech-title {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.5vw, 2rem);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.9;
  text-align: center;
  max-width: 700px;
  margin-bottom: 5rem;
  position: relative;
}
.tech-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  max-width: var(--max-w);
  width: 100%;
  position: relative;
}
.tech-card {
  border: 1px solid rgba(160,210,170,0.1);
  padding: clamp(2rem, 3vw, 3rem);
  transition: all 0.5s var(--ease);
}
.tech-card:hover {
  background: rgba(160,210,170,0.04);
  border-color: rgba(160,210,170,0.25);
}
.tech-card-number {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  color: var(--c-sage);
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  line-height: 1;
}
.tech-card-desc {
  font-size: 0.82rem;
  line-height: 1.9;
  opacity: 0.55;
  letter-spacing: 0.03em;
}
.tech-bottom {
  margin-top: 4rem;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  opacity: 0.3;
  position: relative;
  line-height: 2.2;
}

/* ============================================
   Section 6: Five Heng Technology
   ============================================ */
.fiveheng {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}
.fiveheng-bg {
  position: absolute;
  inset: 0;
  background: url('/public/fiveheng-tech.jpg') center center/cover no-repeat;
}
.fiveheng-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(17,30,17,0.55);
}
.fiveheng-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 1;
}
.fiveheng-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}
.fiveheng-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--c-light);
  text-align: center;
}
.fiveheng-btn {
  display: inline-block;
  padding: 1rem 3rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--c-light);
  background: transparent;
  border: 1px solid rgba(245,242,237,0.4);
  border-radius: 2px;
  text-decoration: none;
  transition: all 0.4s var(--ease);
  cursor: pointer;
}
.fiveheng-btn:hover {
  background: rgba(245,242,237,0.1);
  border-color: rgba(245,242,237,0.7);
  transform: translateY(-2px);
}

/* Tech Actions Button */
.tech-actions {
  text-align: center;
  margin-top: 2rem;
}
.tech-btn {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--c-sage);
  text-decoration: none;
  padding: 0.9rem 2rem;
  border: 1px solid var(--c-sage);
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}
.tech-btn:hover {
  background: var(--c-sage);
  color: var(--c-light);
}

/* ============================================
   Section 7: CTA
   ============================================ */
.cta {
  min-height: 80vh;
  background: linear-gradient(175deg, var(--c-dark) 0%, var(--c-dark-mid) 50%, var(--c-dark-soft) 100%);
  color: var(--c-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(5rem, 10vw, 8rem) var(--section-px);
}
.cta-label {
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--c-sage);
  margin-bottom: 2.5rem;
}
.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}
.cta-desc {
  font-size: 0.88rem;
  opacity: 0.5;
  letter-spacing: 0.05em;
  max-width: 480px;
  line-height: 1.9;
  margin-bottom: 3.5rem;
}
.cta-buttons {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  justify-content: center;
}
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.4s var(--ease);
  cursor: pointer;
  background: transparent;
}
.btn-sage {
  border: 1px solid var(--c-sage);
  color: var(--c-sage);
}
.btn-sage:hover {
  background: var(--c-sage);
  color: var(--c-dark);
}
.btn-white {
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.65);
}
.btn-white:hover {
  border-color: rgba(255,255,255,0.55);
  color: var(--c-light);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: #0a0f0a;
  color: rgba(255,255,255,0.25);
  padding: 3rem var(--section-px);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  font-weight: 600;
}
.footer-logo-text {
  color: var(--c-sage);
}
.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.footer-links a {
  color: inherit;
  text-decoration: none;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  transition: color 0.3s;
}
.footer-links a:hover { color: rgba(255,255,255,0.5); }
.footer-copy {
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  width: 100%;
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

/* Footer 备案信息 */
.footer-legal {
  width: 100%;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.03);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.footer-legal-text {
  font-size: 0.6rem;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.3);
  margin: 0;
}
.footer-legal-text a {
  color: rgba(255,255,255,0.3);
  text-decoration: none;
  transition: color 0.3s ease;
}
.footer-legal-text a:hover {
  color: var(--c-sage);
}

/* Footer 合作伙伴 */
.footer-partners {
  width: 100%;
  margin-top: 2rem;
}
.footer-partner-title {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.footer-logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  align-items: center;
}
.footer-logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
}
.footer-logo-img {
  width: auto;
  max-width: 100%;
  height: 50px;
  object-fit: contain;
  opacity: 0.8;
  transition: opacity 0.3s ease;
  display: block;
  margin: 0 auto;
}
.footer-logo-item:hover .footer-logo-img {
  opacity: 1;
}
.footer-logo-name {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
  text-align: center;
}
.footer-logo-placeholder {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 1.2rem 1rem;
  text-align: center;
  font-size: 0.7rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
}
.footer-logo-placeholder:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(160,210,170,0.3);
  color: rgba(255,255,255,0.4);
}

@media (max-width: 768px) {
  .footer-logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ============================================
   User Stories Grid
   ============================================ */
.stories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.story-card {
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(160,210,170,0.2);
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.story-card:hover {
  background: rgba(255,255,255,0.8);
  border-color: rgba(160,210,170,0.4);
}

.story-card-image {
  width: 100%;
  aspect-ratio: 1;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #2c4a2c 0%, #1a2e1a 100%);
}

.story-card-number {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: #a0d2aa;
  margin-bottom: 0.5rem;
}

.story-card-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: #111e11;
  margin-bottom: 1rem;
}

.story-item-role {
  font-size: 0.75rem;
  opacity: 0.6;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.story-item-location {
  font-size: 0.75rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.story-item-area {
  font-size: 0.75rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.story-item-date {
  font-size: 0.75rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(160,210,170,0.2);
}

.story-card-desc {
  font-size: 0.85rem;
  line-height: 1.8;
  color: #2c3e2c;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .nav {
    padding: 1rem 1.5rem;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    background: rgba(17, 30, 17, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 0;
    border-top: none;
    margin-top: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), visibility 0.3s;
    z-index: 99;
  }
  .nav-links.active {
    opacity: 1;
    visibility: visible;
  }
  .nav-links a {
    font-size: 1rem;
    padding: 0.5rem 1rem;
    opacity: 0.8;
  }
  .nav-links a:hover {
    opacity: 1;
  }
  .sense-panel { grid-template-columns: 1fr; }
  .sense-image { min-height: 45vh; }
  .sense-text { padding: clamp(2rem, 5vw, 4rem); }
  .sense-watermark { font-size: 10rem; }
  .story { grid-template-columns: 1fr; }
  .story-image { min-height: 45vh; }
  .story-text { padding: clamp(2rem, 5vw, 4rem); }
  .story-quote-mark { font-size: 8rem; }
  .stories-grid { grid-template-columns: 1fr; }
  .story-card { grid-template-columns: 1fr; }
  .story-card-image { min-height: 45vh; }
  .story-card-content { padding: clamp(2rem, 5vw, 4rem); }
  .tech-cards { grid-template-columns: 1fr; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 300px; text-align: center; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}
/* Force refresh Mon Aug 17 15:11:10 CST 2026 */